SR01543SE

The manufacture of an Alaskan Bushwheel tailwheel and fork assembly in accordance with Alaskan Buhwheel, Inc. Document ABI-3400, dated April 28, 2005, or later Federal Aviation Administration (FAA) approved revision. The tailwheel and fork assembly must be installed in accordance with Alaskan Bushwheel, Inc. Installation Instructions Document ABITFK-II, dated April 19, 2005, or later FAA approved revision. Held by Alaskan Bushwheel INC., which holds 5 approved modifications in all. Last revised May 9, 2005. System: other and general.

What it applies to

Kind of product: Aircraft
Design holder: The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models: 185, 185A, 185B, 185C, 185D, 185E, A185E, A185F, 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K
Type certificates: 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 3A24, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6, 5A6
On this site: Cessna 180 Skywagon 2,606 registered
Cessna 185 Skywagon 227 registered
Cessna A185 Skywagon 1,372 registered
The FAA's record: On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 7, 2026.